Education: Secondary (high) school graduation certificate. Tasks: Adjust, repair or replace parts and components of commercial transport truck systems. Discuss work with supervisor. Road test motor vehicles . Test automotive systems and components. Adjust, repair or replace parts and components of truck-trailer systems. Repair or replace mechanical units or components. Perform scheduled maintenance service. Test and adjust units to specifications. Advise customers on work performed and future repair requirements. Maintain accurate records. Follow emergency and safety procedures. Clean work area. Experience: 2 years to less than 3 years.